RouterBOARD 411 Series User's Manual
See  Connector Index for pinout of the standard cable required for PoE. All cables made to EIA/TIA 568A/B 
cable specifications will work correctly with PoE. Note that this port supports automatic cross/straight cable 
correction (Auto MDI/X), so you can use either straight or cross-over cable for connecting to other devices.
DB9 Serial Port
The  RS232C  standard  male  DB9  asynchronous  serial  port  may  be  used  for  initial  configuration,  or  for 
attaching a modem or any other RS232  serial device. TxD (pin 3) of this port has -5V DC power when idle. 
RTS and DTR signals are not connected.  Note  that the device does not fully implement the  hardware (RTS/
CTS)  flow  control,  so  it  is  suggested  to  try  to  disable  hardware  flow  control  in  the  terminal  emulation 
program in  case  the  serial  console  does  not  work  as  expected,  and  if  it does  not  help,  make  a  new  cable 
using the pinout given in the User's manual.
LEDs
Power LED
Power LED is on when the board is powered.
User LED
User LED may be programmed at user's option.  It is lit by default when the board starts up, then it is turned 
off when the bootloader runs kernel.
Status LEDs
Five  LEDs  (LD  501-505)  may  be  used  to  show  bootup  activity,  wireless  signals,  and  user  programmed 
values. 
User's Guide
Assembling the Hardware
First to use the board:
● Insert MiniPCI cards and connect antenna wires, if needed;
● Install the board in a case;
● Connect other peripherals and cables.
Powering
Power options:
● J801 power jack:
10..28V DC (supports overvoltage protection)
● Power over Ethernet (PoE) on the J602 LAN1 Ethernet port:
10..28V DC (18..28 V suggested) non-standard PoE powering support
The  board  has  a  direct-input  power  jack  J801  (5.5mm  outside  and  2mm  inside  diameter,  female,  pin 
positive plug) and can as well be powered with PoE. All power inputs are always active, but only one should 
be used at the same time.
RouterBOARD 411 is equipped with a reliable 14W onboard power supply with overvoltage protection. 9..28 
V DC input voltages are accepted, but when powered over long cables, it is suggested to use at least 18V. 
The  system  is  tested  with  24V  solar/wind/RV  systems  with  27.6  charge  voltage.  Overvoltage  protection 
starts from about 28V (up to 100V), so the board will not be damaged if connected to a 48V or 60V power 
line.
RouterBOARD 411  series boards are  compatible with non-standard (passive) Power over Ethernet injectors 
(except power over datalines) and accept powering over up to 100m (330 ft) long Ethernet cable connected 
to the Ethernet port (J602). The board does not work with IEEE802.3af compliant 48V power injectors.
The maximum output of the power supply to the extension cards is normally at about 3.3A
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